Electric-arc lamp



March 30,1926. 1,579,058

S. B. AUSAS ELECTRIC ARC LAMP Filed May 13, 1921 Fig.1. 29

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SIMON BOSSA AUSAS, OF BARCELONA, SPAIN.

israess ELECTRIC-ARC LAMP.

Application filed May 13, 1921. Serial No. 469,320.

To all whom it may concern:

Be it known that I, SIMoN BOSSA Ausas, a subject of the King of Spain, residing at No; 237 Rue Mallorca, Barcelona, Spain, have invented certain new and useful Improvements Relating to Electric-Arc Lamps, of which the following is a specification.

The present invention relates to an electric arc lamp automatically regulated by means that are disposed in such manner that the operation is effective when the lamp is so disposed that the carbons occupy a vertical position as well as when the carbons are dis posed horizontally or inclined. This sheet is secured by avoiding the employment of gravity for securing the movement of the carbons and by the utilization of the means which are hereinafter described.

For the purpose of rendering clearthe construction and operation of the lamp the following description is given of one form of execution represented byway of example in the accompanying drawing in which- Figure 1 is a side elevation, and Figure 2 is an end elevation, one part of the solenoid being represented broken in order that certain parts of the lamp may be clearly in dicated.

The regulating mechanism of the lamp comprises two parts, the one which produces the desired separation of the carbons for the production of the arc and the other for putting the carbons in contact when the lamp is extinguished and for obtaining the movement of the carbons towards each other as they are consumed in operation.

The first of the said parts comprises a solenoid 1 provided with a sliding core 2. To this core 2 is screwed a tube 3 which at its lower end terminates in a piston i sliding within the cylindrical chamber 5 formed in a part secured by screws at 6 and 7 to an upwardly extending fitting 8 concern ric with the winding 9 of thesolenoid and forming a portion of the magnetic circuit and which at its lower part serves for the support of a compression spring 10 which is disposed be tween the upwardly extending part 8 and the lower face of the core 2. The spring 10 is traversed by the tube 3.

The core 2 of the solenoid 1 is provided in the part corresponding to its longitudina axis, with a hole 18 within which is disposed a rod 11 capable of being heldwith the core in its downward movement by means of a clutchling device 12 and sliding the length of the hole in the upward movement of the core. For this purpose the part 12 is pivoted by means of a pivot pin 12 upon the core 2 and is extended to form a fork as indicated at 13, the fork engaging an insulator 14 in the form of a small grooved pulley. This part 14 is pressed upwardly by means of a compression spring 15 which engages at one of its extremities against the part" 14 and at its other end against the abutment or sleeve 16 which is fixed by means of a clamping screw 17 on the rod 19, which latter freely traverses the central part of the solenoid 14. The spring 15 applies upward pressure against the part 1% and this latter engages the fork 13 and thus tends to lift the fork whereby the part 12 by reasonof itsispecial form engages the rod 11 and holds it en.- gaged to the core 2 in the downward movement of the latter, but the rod 11 has an inde pendent movement from the core 2 on the upward movement of the latter.

The rod 11 by means of an arm 20 secured to a screw 21 is jointedly conneced at 22 to a lug or bracket 23 integrally provided with the sleeve 26 and supporting a carbon holder 24 in'which one of the are carbons 25 is mounted. It will be understood that where the construction of the solenoid 1 and the lug or bracket 23 or equivalent parts will permit, the arm 20 may be omitted and the rod 11 be provided with a forked end extending in the direction of its length. The sleeve 26 is traversed by a rod 27 the extremity of which bears upon an insulating part 28 and this red 27 is connected in series with the winding of the solenoid 1. Above the insulating part 28 another rod 29 is mounted carrying a sleeve 80 capable of sliding thereon, this sleeve having a lug or bracket 31 to which is jointed the carbon carrier 32 of the other carbon 33. The insulating part 28 may engage the rods 27 and 29 in any suitable manner. Thus it may have co-axially disposed pins upon the sides of the disc portion for engagement with. recesses formed in the ends of the rods. The sleeves 26 and 30 carry arms 1O and 34L respectively which are traversed by the rod 19 constituting with the rods 27 and 29 the guiding elements for the carbon carriers. The upper arm 84 is connected to a rod 35 which terminates at its lower end in a rack 36 engaging with a pinion 37- geared with another rack 38 integrally provided with a rod 39 which terminates in one of the arms 40 which engage between them a member in the form of a bobbin ll provided of insulating material and capable of sliding the length of the rod 19. The pinion 37 is formed by a drum which is fitted with peripheral teeth and encloses a spiral spring tending to cause the rotation of the said pinion in a direction such that by the operation of theraclrs 36, 38 the movement to- WZLlClSBEtC-ll other of the carbons 33, 25 is caused as they are used until they come into contact when the current does not circulate. a

The rod 27 as before described is connected in series with the winding of the solenoid 1. The other pole of this solenoid is connected to a contact 42 which is connected with one of the poles of the arc feeding current. The rod 19 is connected to the contact 43 which is connected to the other feeding pole and as the rod 19 communicates with the rod 29 and this latter with the carbon 33 it results that the solenoid 1 is connected in series by reference to the are When no current is passing the carbons 25 and'33 are disposed with their ends in contact, since the action of the sprin within the toothed drum or pinion 37 causes the latter to rotate and move the racks and 38- in opposite drections in such manner as to cause the sleeves 30 and 26 to move towards each other and thus. to effect the movement towards each other of the carbons 25 and 33. When the current is switched on, the core 2 of the solenoid 1 is drawn downwardly because the arrangement is such that the force exerted upon the core 2 by the solenoid 1 exceeds that of the spring operating the pinion 37. The spring 10 is compressed, the part 12 renders the rod 11 solid with the core 2 in such manner that the latter operates the sleeve 26' and the carbons 25 and 33 separate and thus the electric arc is iinmediately produced. The separation is effected gently and gradually not only tl'irough the action of the spring 10 but also through that of the piston i which compresses air within the cylinder 5, this action co-operating with that of the spring 10.

The current enters through the contact 42 and successively traverses the solenoid 1, the rod 27, the sleeve 26, the carbons 25 and 33 and the rods 29 and 19, leaving by the latter. WVhen the carbons 25 and 33 are consumed to a certain degree, as the resistance to the passage of the current increases, the solenoid 1 receives a slightly less amount of current and the core rises by the action of the spring 10 and of the air compressed in the cylinder 5, the engagement of the part 12 with the rod 11 ceases so that thus the carbons remain subject to the action of the spring within the pinion 37 which thus predominates and causes the carbons to move towards each other'to the. extent necessary to compensate for the amount of the carbons used. In this manner the production of an electric arc is regulated.

From What has been described it follows that no matter what the situation of the lamp the elements operate under the same free precise conditions so long as the relative position of the movable parts by ref erence to those destined to produce their actuation is preserved, and have equal action and reaction in all positions they may occupy, any variation cannot exercise any influence upon the result. It follows that the vibrations to which the arc may be subjected do not exercise any influence upon its operation and for this reason the lamp is suitable for the lamps of motor vehicles and aeroplanes, as well as for other general purposes.

In the construction of the lamps any suitable materials may be employed. The lamps may be constructed so that currents of different intensity and tension may be employed and the respective parts may be modi- [ied in their form and disposition while maintaining the essential features of the invention as hereinbefore described. The lamp may be" applied in any suitable casing or enclosure.

I claim:

1. An automatically operating electric arc lamp comprising in combination, a support ing frame, carbon holders slidably mounted upon said supporting frame, carbons carried by said carbon holdera'parallel rack members respectively connected with said carbon holders, a pinion disposed between and engaging said racks, a spring for effecting movement of said racks. to feed said carbon holders towards one another, a solenoid mounted on the said supporting frame and in circuit with the carbons, an armature movably mounted within said solenoid and having an axial bore, means acting upon the said armature to maintain the same normally in the outer position with respect to said. solenoid, a rod connected to one of the carbon holders and extending slidably through the said axial here within said armature, a rod gripping lever pivoted for limited rocking motion upon said armature, a resilient device mounted upon said frame and acting upon said rod gripping lever, a release device for causing disengagement of the rod gripping lever from the rod, and means to effect passage of current through the solenoid and through said carbons substantially as described.

2. An automatically operating electric arc lamp comprising in combination, a supporting frame, carbon holders slidab-ly mounted upon said supporting frame, carbons carried by said carbon holders, parallel rack members respectively connected with said carbon holders, a pinion disposed between and engaging said racks, a spring'connected between said supporting frame and said pinion for rotation of the said pinion in one direction to move the said carbon holders towards one another, a solenoid mounted on the said supporting frame and in circuit with the carbons, an armature movably mounted within said solenoid and having an axial bore, means acting upon the said armature to maintain the same normally in the outer position with respect to said solenoid, a rod connected to one of the carbon holders and extending slidably through the said axial bore within said armature, a rod gripping lever pivoted for limited rocking motion upon said armature, a resilient device mounted upon said frame and acting upon said rod gripping lever, a release device for causing disengagement of the rod gripping lever from the rod, and means to effect passage of current through the solenoid and through said carbons, substantially as described.

3. An automatically operating electric arc lamp comprising in combination, a supporting frame, carbon holders slidably mounted upon said supporting frame, carbons carried by said carbon holders, parallel rack members respectively connected with said carbon holders, a pinion disposed between and engaging said racks, a spring connected between said supporting frames and said pinion for rotation of the said pinion in one direction to move the said carbon holders towards one another, a solenoid mounted on the said frame and in circuit with the carbons, an armature movably mounted within said solenoid and having an axial bore, an element applied upon the end of the solenoid to close the same, a spring disposed between said element and said armature to maintain the armature normally in the outer position with respect to the solenoid, a rod connected to one of the carbon holders and extending slidably through the said axial bore within said armature, a rod gripping lever pivoted for limited rocking motion upon said armature, a resilient device mounted upon said frame and acting upon said rod gripping lever, a release device for causing disengagement of the rod gripping lever from therod, and means to effect the passage of current through the solenoid and through said carbons, substantially as described. 7

4. An automatically operating electric arc lamp comprising in combination, a supporting frame, carbon holders slidably mounted upon said supporting frame, carbons carried by said carbon holders, parallel rack members respectively connected with said carbon holders, a pinion disposed between and engaging said racks, a spring connected between said supporting frames and said pinion for rotation of the said pinion in one direction to move the said carbon holders towards one another, a solenoid mounted on the said frame and in circuit with the carbons, an armature movably mounted within said solenoid and having an axial bore, an element applied upon the end of the solenoid to close the same, a spring disposed between said element and said armature to maintain the armature normally in the outer position with respect to the solenoid, a piston rod connected to said armature and passing slidably through said solenoid closing element, a piston carried by said piston rod, a closed cylinder within which said piston reciprocates, a rod connected to one of the carbon holders and extending slidably through the said axial bore within said armature, a rod grip-' ping lever pivoted for limited rocking motion upon said armature, a resilient device mounted upon said rod gripping lever, a release device for causing disengagement of the rod gripping lever from the rod, and means to effect passage of current through the solenoid and through said carbons, substantially as described.

SIMON BOSSA AUSAS. 

